/* ============================================
   实用百科 (shiyongbaike.com) 全站样式
   移动优先 | CSS变量驱动 | 8pt网格 | CLS防护
   ============================================ */

/* === 基础重置 === */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}

:root{
    --color-primary:#1A5276;
    --color-primary-light:#D4E6F1;
    --color-accent:#133E59;
    --color-bg:#FFFDFB;
    --color-text:#1a1a1a;
    --color-text-secondary:#666;
    --color-text-muted:#999;
    --color-border:#e8e8e8;
    --color-card-bg:#fff;
    --radius-sm:8px;
    --radius-md:12px;
    --radius-lg:16px;
    --shadow-card:0 1px 4px rgba(0,0,0,0.06);
    --shadow-sm:0 1px 2px rgba(0,0,0,0.04);
    --font:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei","Helvetica Neue",sans-serif;
    --max-width:960px;
    --sidebar-width:260px;
}

html{font-size:16px;-webkit-text-size-adjust:100%}
body{
    font-family:var(--font);color:var(--color-text);
    background:var(--color-bg);line-height:1.6;min-height:100vh;
    display:flex;flex-direction:column;
}
a{color:var(--color-primary);text-decoration:none}
a:hover{opacity:.8}
img{max-width:100%;height:auto}
::selection{background:var(--color-primary);color:#fff}
:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px}

/* === 顶部导航 === */
.site-header{
    background:#fff;border-bottom:1px solid var(--color-border);
    position:sticky;top:0;z-index:100;
    backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
}
.header-inner{
    max-width:var(--max-width);margin:0 auto;padding:0 16px;
    height:48px;display:flex;align-items:center;justify-content:space-between;
}
.brand-name{font-size:1.1rem;font-weight:700;color:var(--color-primary);letter-spacing:.5px;white-space:nowrap}
.header-nav{display:flex;gap:12px;overflow-x:auto;-webkit-overflow-scrolling:touch;scrollbar-width:none}
.header-nav::-webkit-scrollbar{display:none}
.header-nav a{font-size:.85rem;color:var(--color-text-secondary);padding:4px 0;white-space:nowrap;transition:color .15s;min-height:44px;display:flex;align-items:center}
.header-nav a:hover,.header-nav a.active{color:var(--color-primary);opacity:1}
.header-search{flex:0 0 auto;margin-left:8px;display:flex;align-items:center;position:relative}
.header-search input{
    width:180px;height:36px;padding:0 36px 0 14px;
    border:1.5px solid var(--color-border);border-radius:20px;
    font-size:.85rem;background:var(--color-bg);color:var(--color-text);
    outline:none;transition:border-color .2s,box-shadow .2s;
}
.header-search input:focus{border-color:var(--color-primary);box-shadow:0 0 0 3px var(--color-primary-light)}
.header-search input::placeholder{color:var(--color-text-muted)}
.header-search button{
    position:absolute;right:2px;background:none;border:none;cursor:pointer;
    padding:8px;color:var(--color-text-muted);display:flex;align-items:center;
    min-width:36px;min-height:36px;justify-content:center;border-radius:50%;
    transition:color .15s,background .15s;
}
.header-search button:hover{color:var(--color-primary);background:var(--color-primary-light)}

/* === 移动端汉堡菜单 === */
.menu-toggle{display:none;background:none;border:none;font-size:1.5rem;cursor:pointer;padding:4px 8px;color:var(--color-text);min-width:44px;min-height:44px}
@media(max-width:768px){
    .menu-toggle{display:block}
    .header-nav{display:none;position:absolute;top:48px;left:0;right:0;background:#fff;flex-direction:column;padding:8px 16px;border-bottom:1px solid var(--color-border);box-shadow:0 4px 12px rgba(0,0,0,.08);z-index:99}
    .header-nav.open{display:flex}
    .header-nav a{padding:10px 0;border-bottom:1px solid var(--color-border)}
    .header-nav a:last-child{border-bottom:none}
    .header-search input{width:120px}
}

/* === 主内容区 === */
.main-content{flex:1;max-width:var(--max-width);margin:0 auto;width:100%}

/* === Hero横幅 === */
.hero-banner{
    background:linear-gradient(135deg,var(--color-primary),var(--color-accent));
    color:#fff;padding:32px 20px 28px;text-align:center;
}
.hero-title{font-size:1.6rem;font-weight:700;margin-bottom:4px;letter-spacing:1px}
.hero-tagline{font-size:.9rem;opacity:.85;font-weight:400}

.hero-compact{background:var(--color-primary);color:#fff;padding:20px 16px;text-align:center}
.hero-compact .hero-title{font-size:1.2rem;margin:0}
.hero-compact .hero-tagline{font-size:.8rem;opacity:.85;margin:4px 0 0}

/* === 区块标题 === */
.section-header{display:flex;align-items:baseline;gap:8px;padding:20px 16px 12px}
.section-title{font-size:1.1rem;font-weight:700;color:var(--color-text);position:relative;padding-left:12px}
.section-title::before{content:'';position:absolute;left:0;top:50%;transform:translateY(-50%);width:3px;height:18px;background:var(--color-primary);border-radius:2px}
.section-subtitle{font-size:.8rem;color:var(--color-text-muted)}

/* === 分类标签区 === */
.category-tags-section{padding:12px 16px;background:#fff;border-bottom:1px solid var(--color-border)}
.category-tags{display:flex;flex-wrap:wrap;gap:8px}
.category-tag{display:inline-block;padding:4px 14px;background:var(--color-primary-light);color:var(--color-primary);font-size:.8rem;border-radius:14px;transition:background .15s;text-decoration:none;min-height:32px;display:flex;align-items:center}
.category-tag:hover,.category-tag.active{background:var(--color-primary);color:#fff;opacity:1}

/* === 文章卡片列表 === */
.card-list{padding:0 16px}
.article-card{display:flex;align-items:center;gap:12px;padding:14px 0;border-bottom:1px solid var(--color-border);cursor:pointer;transition:background .15s}
.article-card:last-child{border-bottom:none}
.article-card:active{background:var(--color-primary-light);margin:0 -16px;padding-left:16px;padding-right:16px;border-radius:var(--radius-sm)}
.card-index{font-size:.85rem;font-weight:600;color:var(--color-primary);min-width:24px;text-align:center}
.card-title{flex:1;font-size:.95rem;color:var(--color-text);line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-arrow{flex-shrink:0;color:var(--color-text-muted);width:16px;height:16px}

/* === 2列网格 === */
.card-grid2{display:grid;grid-template-columns:1fr 1fr;gap:10px;padding:0 16px 16px}
.article-card-grid{background:#fff;border:1px solid var(--color-border);border-radius:var(--radius-md);padding:14px;text-decoration:none;color:var(--color-text);display:flex;flex-direction:column;gap:6px;min-height:80px;transition:box-shadow .15s}
.article-card-grid:hover{box-shadow:0 4px 12px rgba(0,0,0,.08)}
.article-card-grid .card-index{font-size:.7rem;color:var(--color-primary);font-weight:600}
.article-card-grid .card-title{font-size:.85rem;line-height:1.5;-webkit-line-clamp:3}

/* === 3列网格 === */
.card-grid3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:8px;padding:0 12px 16px}
.article-card-grid3{background:#fff;border:1px solid var(--color-border);border-radius:var(--radius-sm);padding:10px 12px;text-decoration:none;color:var(--color-text);display:flex;flex-direction:column;gap:4px;min-height:70px;transition:border-color .15s}
.article-card-grid3:hover{border-color:var(--color-primary)}
.article-card-grid3 .card-index{font-size:.65rem;color:var(--color-text-muted)}
.article-card-grid3 .card-title{font-size:.78rem;line-height:1.4;-webkit-line-clamp:3}

/* === 横向滚动 === */
.card-scroll{display:flex;overflow-x:auto;gap:12px;padding:0 16px 16px;scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch}
.card-scroll::-webkit-scrollbar{display:none}
.article-card-scroll{flex:0 0 70%;scroll-snap-align:start;background:#fff;border:1px solid var(--color-border);border-radius:var(--radius-md);padding:16px;text-decoration:none;color:var(--color-text);display:flex;flex-direction:column;gap:8px;min-height:100px}
.article-card-scroll .card-index{font-size:1.5rem;font-weight:200;color:var(--color-text-muted)}
.article-card-scroll .card-title{font-size:.95rem;line-height:1.5}

/* === 首篇突出 === */
.article-card-featured{display:flex;align-items:center;gap:12px;padding:20px 16px;margin:0 16px;background:linear-gradient(135deg,var(--color-primary-light),#fff);border-radius:var(--radius-lg);text-decoration:none;color:var(--color-text);border:2px solid var(--color-primary)}
.article-card-featured .card-title{font-size:1.05rem;font-weight:700;flex:1}
.article-card-featured .card-index{background:var(--color-primary);color:#fff;border-radius:50%;width:30px;height:30px;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.85rem}
.card-rest{padding:0 16px}

/* === 面包屑 === */
.detail-nav{max-width:960px;margin:0 auto;padding:12px 16px;display:flex;align-items:center;gap:6px;font-size:.85rem;color:var(--color-text-secondary)}
.detail-nav .back-link{display:inline-flex;align-items:center;gap:4px;color:var(--color-primary);font-weight:500}
.detail-nav .nav-sep{color:var(--color-text-muted)}
.detail-nav .nav-current{color:var(--color-text);font-weight:500}

/* === 详情页通用块 === */
.detail-block{background:#fff;padding:20px 16px;margin-bottom:12px;border-radius:var(--radius-sm);box-shadow:var(--shadow-sm)}
.detail-main{min-width:0}

/* === 5组布局 === */
.detail-layout{margin:0 auto;padding:0 16px;display:grid;gap:20px;align-items:start}
.layout-B,.layout-D{max-width:960px;grid-template-columns:1fr 260px}
.layout-A{max-width:960px;grid-template-columns:260px 1fr}
.layout-C{max-width:960px;grid-template-columns:1fr}
.layout-E{max-width:720px;grid-template-columns:1fr}

/* D组杂志Hero */
.detail-hero{max-width:960px;margin:0 auto 20px;padding:0 16px;display:flex;align-items:center;gap:24px;background:#fff;border-radius:var(--radius-md);box-shadow:var(--shadow-card);overflow:hidden}
.detail-hero .hero-poster{width:200px;height:280px;object-fit:cover;flex-shrink:0}
.detail-hero-text{padding:24px}
.detail-hero-text h1{font-size:1.6rem;font-weight:800;margin-bottom:8px;color:var(--color-text)}
.detail-hero-text p{font-size:.95rem;color:var(--color-text-secondary)}

/* C组顶置条 */
.infobox-strip{max-width:960px;margin:0 auto 16px;padding:12px 20px;background:#fff;border-radius:var(--radius-sm);box-shadow:var(--shadow-sm);display:flex;flex-wrap:wrap;align-items:center;gap:8px 20px;font-size:.85rem}
.infobox-strip-title{font-weight:700;color:var(--color-primary);margin-right:8px}
.infobox-strip-item em{font-weight:500;color:var(--color-text-secondary);font-style:normal;margin-right:4px}
.infobox-strip-item em::after{content:'：'}

/* 标题区 */
#block-header{padding:24px 20px}
.article-title{font-size:1.5rem;font-weight:700;line-height:1.4;color:var(--color-text);margin-bottom:6px}
.article-subtitle{font-size:.9rem;color:var(--color-text-secondary)}

/* 头图 */
#block-headimg{text-align:center;padding:16px}
.head-image{max-width:260px;width:100%;height:auto;border-radius:var(--radius-sm);aspect-ratio:auto}

/* 目录 */
#block-toc{padding:16px 20px;background:#f8f9fb}
.toc-title{font-size:.95rem;font-weight:700;margin-bottom:10px}
.toc-list{list-style:none;columns:2;column-gap:16px}
.toc-list li{margin-bottom:6px;break-inside:avoid}
.toc-list a{display:block;padding:4px 0;font-size:.85rem;color:var(--color-primary);text-decoration:none}
.toc-list a:hover{text-decoration:underline}
.toc-list .toc-h2 a{padding-left:12px;font-size:.8rem;color:var(--color-text-secondary)}
@media(max-width:500px){.toc-list{columns:1}}

/* 正文 */
#block-content{line-height:1.85;font-size:1rem}
.content-heading{font-weight:700;margin:24px 0 12px;line-height:1.4}
h2.content-heading{font-size:1.2rem}
h3.content-heading{font-size:1.05rem}
h4.content-heading{font-size:1rem}
.content-paragraph{margin-bottom:14px}
.content-paragraph .ilink{color:var(--color-primary);border-bottom:1px dashed var(--color-primary)}
.content-paragraph .ilink:hover{border-bottom-style:solid}

/* 内容图片 */
.content-figure{margin:20px 0;text-align:center}
.content-figure img{max-width:100%;height:auto;border-radius:var(--radius-sm)}
.content-figure.figure-right{float:right;margin-left:16px;max-width:40%}
.content-figure figcaption{font-size:.85rem;color:var(--color-text-secondary);margin-top:8px}

/* 内容表格 */
.content-table-wrapper{overflow-x:auto;margin:20px 0}
.content-table{width:100%;border-collapse:collapse;font-size:.9rem;border-radius:var(--radius-sm);overflow:hidden;box-shadow:var(--shadow-sm)}
.content-table thead{background:var(--color-primary)}
.content-table th{color:#fff;font-weight:600;padding:10px 12px;text-align:left;white-space:nowrap}
.content-table td{padding:10px 12px;border-bottom:1px solid var(--color-border);vertical-align:top;background:#fff}
.content-table tr:last-child td{border-bottom:none}

/* 作品卡片 */
.works-gallery{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:14px;margin:20px 0}
.work-card{background:#fff;border-radius:var(--radius-sm);overflow:hidden;box-shadow:var(--shadow-sm);transition:transform .2s}
.work-card:hover{transform:translateY(-3px)}
.work-card-img{aspect-ratio:3/4;overflow:hidden;background:#f0f0f0}
.work-card-img img{width:100%;height:100%;object-fit:cover;display:block}
.work-card-info{padding:12px}
.work-card-info strong{display:block;font-size:.9rem;margin-bottom:4px}
.work-date{display:inline-block;padding:2px 8px;border-radius:20px;background:var(--color-primary-light);color:var(--color-primary);font-size:.75rem;font-weight:600}

/* 参考资料 */
#block-references{padding:20px 16px 24px}
.ref-title{font-size:1rem;font-weight:700;margin-bottom:12px;padding-left:12px;border-left:3px solid var(--color-primary)}
.ref-list{list-style:none;counter-reset:ref}
.ref-item{counter-increment:ref;padding:8px 0 8px 24px;position:relative;font-size:.85rem;border-bottom:1px solid var(--color-border);line-height:1.6}
.ref-item:last-child{border-bottom:none}
.ref-item::before{content:counter(ref)'.';position:absolute;left:0;color:var(--color-primary);font-weight:600;font-size:.8rem}
.ref-link{color:var(--color-primary);display:block;margin-bottom:2px}
.ref-source,.ref-date{font-size:.75rem;color:var(--color-text-muted);margin-right:8px}

/* 注释 */
.content-note{font-size:.85rem;color:var(--color-text-secondary);padding:10px 14px;background:#fff8e1;border-radius:6px;margin-bottom:8px}

/* 相关人物 */
.related-grid{display:flex;flex-wrap:wrap;gap:10px}
.related-chip{display:flex;align-items:center;gap:10px;padding:10px 14px;background:#f8f9fb;border-radius:50px;border:1px solid var(--color-border);text-decoration:none;color:var(--color-text);font-size:.85rem;transition:all .2s}
.related-chip:hover{border-color:var(--color-primary);background:#fff;transform:translateY(-2px);opacity:1}
.related-chip img{width:36px;height:36px;border-radius:50%;object-fit:cover}
.related-info strong{display:block}

/* 信息框 */
.detail-sidebar{position:sticky;top:60px;align-self:start}
.infobox-card{background:#fff;border-radius:var(--radius-sm);box-shadow:var(--shadow-card);overflow:hidden}
.infobox-title{background:var(--color-primary);color:#fff;text-align:center;font-size:.95rem;font-weight:600;padding:10px}
.infobox-body{padding:0}
.infobox-group-label{background:#f0f2f5;font-size:.75rem;font-weight:600;padding:6px 12px;color:var(--color-text-secondary)}
.infobox-item{display:flex;border-bottom:1px solid var(--color-border);font-size:.8rem}
.infobox-item:last-child{border-bottom:none}
.infobox-key{width:70px;min-width:70px;padding:6px 10px;background:#fafbfc;color:var(--color-text-secondary);font-weight:500;font-size:.75rem}
.infobox-value{flex:1;padding:6px 10px}

/* === 5组布局特有 === */
.layout-A h2.content-heading{border-left:4px solid var(--color-primary);padding-left:12px}
.layout-B h2.content-heading{border-bottom:2px solid var(--color-primary-light);padding-bottom:6px}
.layout-C #block-content{max-width:780px;margin:0 auto}
.layout-D #block-content>.content-paragraph:first-of-type{font-size:1.1rem;color:#555}
.layout-E .article-title{text-align:center}
.layout-E h2.content-heading{text-align:center;border-bottom:2px solid var(--color-primary);padding-bottom:8px}
.layout-E .head-image{max-width:200px;border-radius:50%}

/* === 搜狗相关推荐 === */
#block-sogou{padding:20px 16px;background:#fafbfc}
.sogou-module-title{font-size:1rem;font-weight:700;padding-left:12px;border-left:3px solid #F86B1F;color:var(--color-text)}
.sogou-header{display:flex;align-items:center;gap:8px;margin-bottom:14px;flex-wrap:wrap}
.sogou-badge{color:#fff;padding:2px 7px;border-radius:3px;font-size:.7rem;font-weight:700;letter-spacing:.3px}
.sogou-news{display:flex;flex-direction:column;gap:8px}
.sogou-card{background:#fff;padding:14px 16px;border-radius:8px;border-left:3px solid transparent;transition:border-color .2s,box-shadow .2s}
.sogou-card:hover{box-shadow:0 2px 8px rgba(0,0,0,.06)}
.sogou-card h4{display:flex;align-items:baseline;gap:6px;font-size:.92rem;margin-bottom:6px}
.sogou-card h4 a{color:var(--color-text);text-decoration:none}
.sogou-source{color:#fff;padding:1px 6px;border-radius:3px;font-size:.68rem;font-weight:600;white-space:nowrap}
.sogou-desc{font-size:.8rem;color:var(--color-text-secondary);line-height:1.5;margin-bottom:6px;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;display:-webkit-box}

/* === Z-BlogPHP 分页 === */
.pagebar{display:flex;justify-content:center;align-items:center;gap:6px;padding:24px 16px;flex-wrap:wrap}
.pagebar a,.pagebar span{display:inline-flex;align-items:center;justify-content:center;min-width:36px;min-height:36px;padding:4px 10px;border-radius:6px;font-size:.85rem;text-decoration:none}
.pagebar a{background:#fff;color:var(--color-text-secondary);border:1px solid var(--color-border);transition:all .15s}
.pagebar a:hover{background:var(--color-primary);color:#fff;border-color:var(--color-primary)}
.pagebar span.now-page{background:var(--color-primary);color:#fff;border:1px solid var(--color-primary);font-weight:600}
.pagebar span.dots{color:var(--color-text-muted);border:none;background:none}

/* === Z-BlogPHP 评论 === */
.comment-section{padding:20px 0}
.comment-title{font-size:1.1rem;font-weight:700;margin-bottom:16px;padding-left:12px;border-left:3px solid var(--color-primary)}
.comment-list{list-style:none}
.comment-item{padding:14px 0;border-bottom:1px solid var(--color-border)}
.comment-item:last-child{border-bottom:none}
.comment-author{font-weight:600;font-size:.9rem;color:var(--color-text)}
.comment-time{font-size:.75rem;color:var(--color-text-muted);margin-left:8px}
.comment-body{font-size:.9rem;color:var(--color-text-secondary);margin-top:6px;line-height:1.6}
.comment-body p{margin:0}
.comment-reply{margin-top:6px}
.comment-reply a{font-size:.8rem;color:var(--color-primary)}
.comment-form{margin-top:20px}
.comment-form textarea{width:100%;padding:10px 14px;border:1px solid var(--color-border);border-radius:var(--radius-sm);font-size:.9rem;font-family:var(--font);resize:vertical;min-height:80px}
.comment-form textarea:focus{border-color:var(--color-primary);outline:none}
.comment-form input[type="text"]{width:100%;padding:8px 12px;border:1px solid var(--color-border);border-radius:var(--radius-sm);font-size:.9rem;margin-bottom:8px}
.comment-form input[type="submit"]{padding:10px 24px;background:var(--color-primary);color:#fff;border:none;border-radius:6px;font-size:.9rem;font-weight:600;cursor:pointer}
.comment-form input[type="submit"]:hover{background:var(--color-accent)}

/* === 侧栏模块 === */
.side-module{margin-bottom:16px}
.side-module-title{font-size:.95rem;font-weight:700;padding:10px 14px;background:var(--color-primary);color:#fff;border-radius:var(--radius-sm) var(--radius-sm) 0 0}
.side-module-body{padding:12px 14px;background:#fff;border:1px solid var(--color-border);border-top:none;border-radius:0 0 var(--radius-sm) var(--radius-sm)}
.side-module-body ul{list-style:none}
.side-module-body li{padding:6px 0;border-bottom:1px solid var(--color-border);font-size:.85rem}
.side-module-body li:last-child{border-bottom:none}
.side-module-body li a{color:var(--color-text);display:block;padding:4px 0;transition:color .15s}
.side-module-body li a:hover{color:var(--color-primary)}

/* === 搜索页 === */
.search-page{padding:20px 16px}
.search-page h2{font-size:1.2rem;margin-bottom:16px}
.search-no-result{text-align:center;padding:40px 16px;color:var(--color-text-secondary)}
.search-no-result h3{font-size:1.1rem;margin-bottom:8px}
.search-no-result p{font-size:.9rem;margin-bottom:16px}

/* === 404 === */
.error-page{text-align:center;padding:80px 20px}
.error-page .error-code{font-size:4rem;font-weight:700;color:#ddd;line-height:1}
.error-page h2{font-size:1.2rem;margin:12px 0 8px;color:var(--color-text)}
.error-page p{font-size:.9rem;color:var(--color-text-secondary);margin-bottom:20px}
.error-page a{display:inline-block;padding:10px 28px;background:var(--color-primary);color:#fff;border-radius:20px;font-size:.95rem;font-weight:600}

/* === 加载 === */
.loading-spinner{display:inline-block;width:28px;height:28px;border:3px solid var(--color-border);border-top-color:var(--color-primary);border-radius:50%;animation:spin .6s linear infinite;margin-bottom:12px}
@keyframes spin{to{transform:rotate(360deg)}}

/* === 页脚 === */
.site-footer{background:#2c2c2c;color:#aaa;text-align:center;padding:20px 16px;margin-top:auto;font-size:.8rem;line-height:1.8}
.footer-links{margin-bottom:4px}
.footer-links a{color:#ccc;transition:color .15s}
.footer-links a:hover{color:#fff;opacity:1}
.footer-icp{font-size:.75rem}
.footer-brand{font-size:.75rem;color:#777}

/* === 响应式 === */
@media(max-width:768px){
    .layout-A,.layout-B,.layout-C,.layout-D,.layout-E{grid-template-columns:1fr;padding:0;max-width:100%}
    .detail-sidebar{position:static}
    .detail-block{border-radius:0!important;margin-bottom:1px}
    #block-header{padding:20px 16px}
    .article-title{font-size:1.25rem}
    .content-table-wrapper{margin:12px -16px;width:calc(100% + 32px)}
    .works-gallery{grid-template-columns:repeat(2,1fr)}
    .infobox-card{border-radius:0!important}
    .detail-hero{flex-direction:column;padding:16px}
    .detail-hero .hero-poster{width:160px;height:220px}
    .infobox-strip{flex-direction:column;align-items:flex-start}
    .card-grid3{grid-template-columns:1fr 1fr}
    .article-card-scroll{flex:0 0 80%}
    .sogou-card:nth-child(n+5){display:none}
}
@media(min-width:768px){
    .header-inner{padding:0 24px}
    .hero-banner{padding:48px 24px 40px}
    .hero-title{font-size:2rem}
    .card-list{padding:0 24px}
    .article-card{padding:16px 0}
    #block-header{padding:28px 24px 20px}
    .article-title{font-size:1.6rem}
    .section-header{padding:24px 24px 16px}
    .card-grid2{grid-template-columns:1fr 1fr 1fr}
    .card-grid3{grid-template-columns:1fr 1fr 1fr 1fr}
    .article-card-scroll{flex:0 0 45%}
    .article-card-featured{margin:0 24px;padding:28px 24px}
}
@media(min-width:1024px){
    .hero-banner{padding:56px 32px 48px}
    .hero-title{font-size:2.2rem}
}

/* === 暗色模式 === */
@media(prefers-color-scheme:dark){
    :root{--color-bg:#0F0F0F;--color-bg-alt:#1A1A1A;--color-card-bg:#1A1A1A;--color-border:#333;--color-text:#e5e5e5;--color-text-secondary:#999;--color-text-muted:#666}
    body{background:var(--color-bg)}
    .site-header{background:#1a1a1a}
    .detail-block,.article-card-grid,.article-card-grid3,.article-card-scroll,.infobox-card{background:var(--color-card-bg)}
    .infobox-group-label{background:#222;color:#999}
    .infobox-key{background:#1a1a1a}
    #block-toc{background:#1a1a1a}
    .content-note{background:#2d2416}
    .related-chip{background:var(--color-bg-alt)}
    .sogou-card{background:var(--color-card-bg)}
    .side-module-body{background:var(--color-card-bg)}
}

/* === 搜狗聚合卡片 === */
.sogou-header{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-bottom:12px}
.sogou-module-title{font-size:1.1rem;font-weight:700;margin:0}
.sogou-badge{padding:2px 8px;border-radius:4px;font-size:.7rem;color:#fff}
.sogou-header-hint{font-size:.75rem;color:var(--color-text-muted);margin-left:auto}
.sogou-news{display:flex;flex-direction:column;gap:12px}
.sogou-card{padding:12px 16px;background:var(--color-card-bg);border-radius:var(--radius-sm);border:1px solid var(--color-border)}
.sogou-card h4{font-size:.95rem;margin:0 0 6px;display:flex;align-items:center;gap:8px}
.sogou-source{display:inline-block;padding:1px 6px;border-radius:3px;font-size:.65rem;color:#fff;flex-shrink:0}
.sogou-desc{font-size:.8rem;color:var(--color-text-secondary);margin:0 0 6px;line-height:1.5}
.sogou-link{font-size:.75rem;color:var(--color-primary);text-decoration:none}
.sogou-link:hover{text-decoration:underline}

/* === 减少动效 === */
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important}}